Ian, for the long exposures do you use the in-camera long exposure noise reduction on the D40?

Fantastic pics as usual.
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I keep 'fixing' things until they break.

Thanks for that!

Yes, I do use the in-camera long exposure noise reduction on my D40.....as you know, it effectively doubles the time that it takes the camera to take and process the shot before you can see the results which can be a bit frustrating at times but I'd hate to lose a shot to boom caused by sensor heating.